It is in the owner's manual. Need to consult it. Or look in the glove box.
The block heater cord is on the Engine Block Heater on the 2007 Chevy Optra.
The # 3 engine cylinder has a misfire
On a 2001 Ford Explorer Sport Trac the engine cylinder locations are numbered
firewall
3 - 6
2 - 5
1 - 4
front of vehicle
A 1995 model year and newer vehicle will use R134a refrigerant.
According to the 2004 Ford Explorer Sport Trac Owner Guide :
( the fuel pump shut off switch / inertia switch is in the front passenger
footwell , behind the kick panel access cover )